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Difference between attr_accessor and attr_accessible
... is that when you create somehow a link between a (Rails) model with a database table, you NEVER, NEVER, NEVER need attr_accessor in your model to create setters and getters in order to be able to modify your table's records.
This is because your model inherits all methods from the ActiveRecord::Ba...
How do I return NotFound() IHttpActionResult with an error message or exception?
...he droids you're looking for.");
}
}
If you used a custom controller base class (instead of directly inheriting from ApiController), you could also eliminate the "this." part (which is unfortunately required when calling an extension method):
public class CustomApiController : ApiController
{...
What is the most pythonic way to check if an object is a number?
...re multiplying a vector by X. In this case you want to do different things based on what X is. (It might act as something that multiplies, but the result might be nonsensical.)
– Evgeni Sergeev
May 2 '15 at 5:34
...
What are the best use cases for Akka framework [closed]
...: MQ systems and alternatives. RabbitMQ, for example, is built on an actor-based programming language, Erlang. That's one way to think about the relation (and distinction) between actor and MQ. Meanwhile Apache Spark is neither worker-and-queue nor Actor-based, BUT can be used with Akka: Typesafe de...
Custom method names in ASP.NET Web API
...outes. Luckily enough, you can easily do that by using either a Convention-Based and/or an Attribute-Based approach (aka Attribute Routing).
Convention-Based
In your Startup.cs class, replace this:
app.UseMvc();
with this:
app.UseMvc(routes =>
{
// Route Sample A...
Get number days in a specified month using JavaScript? [duplicate]
...
in Javascript months a 0-based, so while this seems right it is inconsistent with other javascript functions
– Greg
Jul 26 '09 at 11:43
...
How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?
...(no need to copy) so that it logs the exception with ELMAH and only if the base implementation handles it. The minimal amount of code you need is as follows:
using System.Web.Mvc;
using Elmah;
public class HandleErrorAttribute : System.Web.Mvc.HandleErrorAttribute
{
public override void OnExce...
What is scope/named_scope in rails?
...u marked those who receive a newsletter by adding a field to the Users Database (user.subscribed_to_newsletter = true). Naturally, you sometimes want to get those Users who are subscribed to your newsletter.
You could, of course, always do this:
User.where(subscribed_to_newsletter: true).each do #...
When is each sorting algorithm used? [closed]
...cant.
Insertion sort: When N is guaranteed to be small, including as the base case of a quick sort or merge sort. While this is O(N^2), it has a very small constant and is a stable sort.
Bubble sort, selection sort: When you're doing something quick and dirty and for some reason you can't just ...
What exactly do the Vagrant commands do?
... and prepare boxes to use that.
Also some times, you may want to use ssh based automation with your VMs. In that case, knowing which key is being used is useful. You could do use normal ssh command - ssh -i keyfile ..
vagrant status <vmname>
This command is a wrapper which provides the info...